ペンタゴン

noun

pentagon; five-sided polygon

Rare as a Japanese term for the shape; 五角形 is the normal word in mathematics and everyday explanation.

See also: 五角形

• 図ず形けいとしての「ペンタゴン」は、普ふ通つうは五ご角かく形けいと言いう。

  The shape called a “pentagon” is normally called 五角形 in Japanese.